Jump to content

Recommended Posts

Posted

Hello everyone
I recently bought a Stax SRD-7 with replaced transformers
the essence of the problem is that the new transformers have a primary winding resistance of only 0.1 ohms (this is if we just measure it with a multimeter) - there are about 32 turns of thick wire, so their compatibility with amplifiers is very limited - amplifiers usually require at least 4 ohms.

You will say that a simple solution to this is to simply add 4-8-16-32 ohm resistors in series with the primary winding.

But. If i add at least 1 ohm - high frequencies begin to drop sharply, this is very audible in headphones.

Is there any other way to put something instead of resistors so that this modified Stax SRD-7 can be safely connected to power amplifiers?

I looked at solutions to this issue in KS M03, for example, there is a "maxim max97220a" for this - but this is a very cheap and poor sounding solution.

I will be grateful for any ideas.

The right decision would probably be to just throw out the Stax SRD-7 and buy a proper amp, but I want to give it a chance by using all the options.

Posted

You are measuring DC resistance of the transformers and not AC inductance but it is still rather low for my liking.  So I'd say the transformers installed as clearly not suitable for this role so I'd replace them with something that actually works.   

Posted
56 minutes ago, spritzer said:

You are measuring DC resistance of the transformers and not AC inductance but it is still rather low for my liking.  So I'd say the transformers installed as clearly not suitable for this role so I'd replace them with something that actually works.   

hi spritzer

thanks for your reply

looks like yes, the only option is to simply either replace the transformers with others or just get a "direct drive" es amplifier

today I bought an old KGSS for a very good price, I think this will be my solution for now

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.